Meng Qi commanded the Yulin Iron Guard, and performed a dance formation for Beichen Zhenren that only Qin Shi Huang is usually qualified to enjoy, which really scared the old man. On one side, he worked very hard, and on the other hand, he was extremely frightened, probably the most embarrassing since the dance formation.

However, neither the performers nor the viewers knew at this time that not too far from them, the little national teacher Zhao Shenxian was experiencing a soul torture, and the main content of the torture was: Will he be shot out of his body?

Three rows of cold and awe-inspiring arrow holes on the wall appeared at the same time as the big-footed girl of the lights-out road chief. In the light of light, this trap can decide the life and death of two people on the stairs. Zhao Liang reacted very quickly, and closed his eyes without hesitation, while the lights out chief in front of him still wanted to struggle again. However, the so-called struggle of turning off the lights is only an exclamation: "Oh my God! ”

At the last moment, there was another clattering sound between the staircase and the wall, and the crossbow bolts suddenly stopped, and then the hole in the wall closed again, as if nothing had happened before.

The head of the lights-out road was almost about to jump out of the railing, seeing the abnormal change, he quickly stabilized his figure, and looked at the wall that had returned to normal with palpitations, and there was no trace of it, and turned his head to ask Zhao Liang: "Immortal Chief, this is ...... What's going on? ”

It was only at this time that Zhao Liang opened his eyes, first looked at himself, and then looked at the lights out, and couldn't help but be surprised and happy: "Damn, didn't you shoot?!" ”

"It's not that I didn't shoot," turned off the lights and blinked: "I didn't shoot at all." ”

Zhao Liang suddenly realized, and then he was puzzled, and was about to open his mouth to ask the lights out Taoist what was going on, but he only heard Xiaoya's shout from below: "It's okay, don't worry and go up boldly!" ”

Hearing this, the two looked at each other, and quickly turned their heads to look, only to see Zheng Luya running up in three steps and two steps, and the trap of thirty-six steps that was triggered by Zhao Liang before had also magically recovered to its original state.

Xiao Ya ran to them in one breath and asked curiously, "Why don't you continue to go up?" Hey? Why are you all pale and sweating? Isn't it because you're tired of climbing? ”

Zhao Liang didn't answer and asked, "What did you do just now?" ”

"I'm going to find the main hub of the agency," Xiaoya smiled: "Don't worry, I've already closed it, and the road behind is smooth." ”

Zhao Liang and Lights Out asked in unison, "The main hub?" What do you mean? ”

Xiao Ya looked at the two of them like idiots for a moment, and then sneered: "Don't you even understand this?" Alas, I really can't do anything about you. However, any building with many traps will usually have a corresponding main hub, and the reason for this is simple. The first is that if you want to keep the various organs in the building running smoothly, you have to have enough power to maintain them. The mechanism of modern architecture relies on electricity, and in ancient times, without electricity, it could only use the driving force formed by flowing water or quicksand. The role of the main hub is to turn this power on or off, otherwise it is very easy to cause the trap mechanism to malfunction. ”

Seeing Zhao Liang and Lights Out nodding again and again, her expression was extremely exaggerated, she couldn't help but smile, and continued: "As for the second reason, it is related to the safety of use. Buildings are different from imperial tombs, and there are always living people who often enter and exit. The traps set up inside the tomb are only to prevent one kind of person, that is, tomb robbers, so once it is activated, it will not be considered to be closed, because it is impossible for normal people to enter the ancient tomb. But the defense system of the building can't be considered like this, in addition to the enemy, I'm afraid that the owner will come more, if you can't control the opening or closing of the mechanism, then isn't it that the owner of the building should also be careful, and if you are not careful, you may be killed by your own trap? ”

Zhao Liang patted his head: ", why didn't I take this into account?" Together, you just walked around below, looking for the master switch? ”

Zheng Luya nodded: "Yes, otherwise what do you think I'm doing?" I have predicted before that the main hub of the Seven Treasure Glazed Pagoda will either be located outside or placed inside the tower. If we were outside, we would never be too far away from the pagoda, because that would not be in line with the common sense of mechanics, and when we came in just now, the surroundings of the Seven Treasure Glazed Pagoda were very empty, and at a glance, there was no place to hide the main hub. So I knew I had to look inside the tower. As for where the tower is, it's actually the same as the light switch in our house, which must be on the first floor. Every time Beichen comes in, he first closes the main hub, then goes upstairs to do errands, and when he comes down, he opens all the organs in the tower before leaving, so as to prevent others from entering, which is reasonable. ”

"The fairy girl is really smart, and the five bodies that Xiaodao admires are on the ground." The head of the lights out couldn't help but praise: "Such an obvious truth, why don't you think of it?" Ask the fairy girl, where is the main hub? ”

Xiao Ya leaned out of the railing, pointed down and said, "Oh, it's behind that screen." There is a large water tank there, I think it is used to prevent fire and extinguish fires, there is a stone slab next to the water tank that can be lifted, the main hub of the organ is inside, hold the copper ring on it and twist it to the right, it will be closed, and twisted back is to open. ”

Zhao Liang said angrily: "I said, eldest sister, why don't you notify me in advance if you always have this plan?" We almost hung up just now, and you didn't pay attention to me when I called you before I went upstairs. ”

Xiaoya stuck out her tongue embarrassedly, and then smiled: "I'm sorry, I thought you knew about the main hub." In addition, I have a problem, once I concentrate on doing things, I can't feel everything around me, no matter how you call me, I can't hear it at all, hehehe, it's causing you both to suffer. ”

Zhao Liang said in his heart: Alas, it is estimated that this state of extreme concentration is the core factor in achieving a scholar, right? Anyway, I can't understand it as a scumbag.

The lights out Taoist reminded him: "Immortal Chief, Immortal Gu, since the organs in the tower have all been lifted at this time, then let's hurry up, General Meng doesn't know how long he can hold Beichen Lao'er." ”

Zhao Liang immediately agreed, time waits for no one, this kind of trick of entering the tiger's den to explore the tiger, every minute and second is very precious, and I really dare not delay. He hurriedly beckoned Zheng Luya and turned off the lights to continue to climb the tower and rescue Yu Hengxing who was trapped on it.

Without the threat of traps, two hundred or so stairs were equivalent to walking on the ground for the three of them, and almost in the blink of an eye, Zhao Liang and the others reached the top floor of the Seven Treasure Glazed Pagoda.

Approaching the door, Zheng Luya couldn't help but sigh, frowning slightly. Zhao Liang hurriedly took a closer look in the faint light, and couldn't help but be stunned. The room on the top floor of the pagoda is closed with two heavy wooden doors, covered with several palm-wide and finger-thick iron sheets, which look like both a decoration and a strange lock.

The lights out chief asked Zheng Luya why she was surprised, whether it was because the door lock was difficult to open. Zheng Luya pointed to the center of the wooden door and said, "The lock between the two doors is not troublesome, it is only a little more complicated than the copper lock downstairs." However, these iron sheets are a distraction for unlocking. You see, the one near the keyhole is just a little bit blocked. Not to mention using my lockpicking tool, even the original key can't be inserted at all. ”

Zhao Liang and Lights Out hurriedly leaned their heads closer when they heard this, and saw that as Xiaoya said, the iron sheet blocked the position of the keyhole.

"Oh, how is this good?" Lights out a little anxious: "Otherwise, let Xiaodao use internal force to blast this door open." ”

Zhao Liang first knocked on the wooden door, and then shook his head: "This guy has to be seven or eight inches thick, and the material is as hard as iron, I'm afraid it can't be destroyed by manpower." ”

He turned to Zheng Luya and asked, "Xiaoya, can you come up with a way?" ”

Zheng Luya didn't answer, as if she hadn't heard it at all, and carefully observed the wooden door from top to bottom while thinking. Suddenly, her gaze stopped in one place, and then she said in surprise: "Ah, I know! ”

"Know what?" Zhao Liang and Lights Out spoke in unison.

"Look here," Zheng Luya said, pointing to a piece of iron, "see that?" There's a beast's head on it. I've been thinking for a long time, this beast head seems to have been seen there before. ”

As she spoke, she stretched out her hand, carefully touched the beast's head and the area on the edge, and said affirmatively: "Right next to the main hub of the agency, there is a beast head that looks exactly like it. At the time, I thought it was just a decoration, so I didn't pay much attention to it, but now I finally know what it is for. ”

Zhao Liang pondered for a moment and asked, "Is your consciousness that the beast head at the bottom and the iron seal here are linked?" ”

"Clever!" Xiaoya patted Zhao Liang and said happily: "This is a kind of child-mother chain buckle in ancient times, which is usually used in a two-lock mechanism. It's just that I didn't expect that the mother and son buckles here can be connected at such a long distance, and the difficulty of the process during this is really amazing. ”

"Is there a way to open it?" The lights out chief said with concern.

Zheng Luya nodded: "Well, all this kind of trick, once you can figure out the principle behind it, it will be easy to crack." Like this letter chain buckle, just twist the beast's head underneath, and the iron sheet here will be slightly removed to the side, completely exposing the keyhole, and I can open it casually. ”

The head of the lights out couldn't help but rejoice: "Okay, let's go down the trail." ”

Zhao Liang grabbed the lights that turned around and wanted to leave, and said, "Dao Chief, let's go down and turn that switch." When the wooden door opens later, there may be some unexpected situations inside, you are strong in martial arts, and you can protect Xiaoya by staying here. With that, he ran away in a puff of smoke.

There are 360 stairs, and it is a little difficult to climb up, but it is much easier to run down. Zhao Liang barely touched the ground with his feet, and flew from the top floor to the bottom of the Seven Treasure Glazed Tower. As soon as he stepped on the small bluestone slab, he couldn't even breathe, and went straight behind the screen to find the beast head switch next to the big water tank.

It only took a few seconds for Zhao Liang to find the movable stone slab that Xiao Ya said slightly behind the water tank. He gently lifted the slate, and saw a large brass ring and a small beast's head underneath. The copper ring should be the main hub of the various organs of the pagoda, and it has been turned ninety degrees by Xiaoya at this time. Zhao Liang didn't pay attention to it, but just grabbed the bronze beast head next to him with his probing hand, and twisted it to the left first, but the beast head did not move at all. He exhaled, then spun hard to the right. This time, the little beast's head moved immediately, and with a faint vibration from his fingertips, Zhao Liang could feel the changes in the child-mother chain buckle.

He crouched on the ground, tilted his head and shouted to the top, "How's it going?" ”

Xiao Ya's voice came: "Okay, I'll pick the lock now-"

Hearing this, Zhao Liang was finally relieved: it seems that tonight's operation is relatively smooth, as long as Yu Hengxing is really locked up in the room on the top floor, the rescue plan will be secure. If Beichen happened to hide the Kunlun faction's treasure "Demon Suppression Catalog" in that safe place, then they could be regarded as good luck, and the so-called people and money would be both good and returned.

Zhao Liang re-covered the bluestone slab, hummed Lao Mao's song "People Like Me" in his mouth, got up from the ground, and walked towards the stairs. But at the moment when he was about to climb the stairs, the corner of his eye saw something strange outside through the half-open crack of the pagoda gate.

The high level of alertness prompted Zhao Liang to stop, and he slowly turned around and leaned to the side of the door, looking outside through the gap. Unexpectedly, it didn't matter what he saw, the scene outside immediately made him feel like falling into an ice cave, and his body was cold.